I would keep the X-T1 because it has an articulated screen and a bigger viewfinder than the X-Pro2/X100T has. I'm not gonna part with my X-T1 If I sell it one day then it would be because I'm getting the X-T2.
I also have the X70, and I may get the future X200 or possibly a X-Pro2 because I would like to have a rangefinder-style camera also.
I really like the X70 because it is so discreet. Leaf shutter, compact size. No one cares or notices that I take their photos, and it is a fun camera to use.